- Must I go to medical school and be a doctor like you Dad? - No you .You are free to ma

问题补充：

- Must I go to medical school and be a doctor like you, Dad?

- No, you .You are free to make your own decision.

A. can

B. mustn

C. shouldn

D. needn

答案：

A. can

B. mustn

C. shouldn

(答案→)D. needn

解析：句意：爸爸，我必须上医校成为像你一样的医生吗？不，你不必。你有自由做自己的决定。A. can 不能B. mustn 一定不要表示禁止C. shouldn 不应该D. needn 不必。根据句意，故选D。